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In a raw Itanium, a 'Processor Abstraction Layer' (PAL) is incorporated in system. When it's booted PAL is loaded in the CPU and provides a low-level interface which abstracts a number of instructions in addition provides a mechanism for processor updates distributed by a BIOS update.
At the time of BIOS initialization an additional layer of code 'System Abstraction Layer' (SAL) is loaded which provides a uniform API for implementation specific platform functions.
On top of PAL/SAL interface sits 'Extensible Firmware Interface' (EFI). EFI isn't part of IA-64 architecture however by convention it's needed on all IA-64 systems. It is a simple API for access to logical features of system (display, storage, keyboard etc) combined with a lightweight runtime environment (which is similar to DOS) which allows basic system administration tasks like configuring storage adapters, flashing BIOS and running an OS boot-loader.
Moment OS has been booted; some features of PAL/SAL/EFI stack stay resident in memory and can be accessed by OS to perform low-level tasks which are implementation-dependent on underlying hardware.
First Order Predicate Logic : This is a more expressive logic because it is mostly builds on propositional logic by allowing us to needs as constants, variables, predicates,
Q. Explain Sample Instruction Format of MIPS instruction? All MIPS instructions are of same size and are 32 bits long. MIPS designers chose to keep all instructions of same len
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Explain the fork-join? fork-join: It is primitives in a programming language of higher level for implementing interacting processes. The syntax is as given below: fork
A ring counter consisting of five Flip-Flops will have ? Ans. A ring counter have 5 states while consisting of Five Flip-Flops.
State the Encryption and decryption process with example Encryption and decryption process in the Figure where Ram wants to send a confidential message to his friend Shyam. Ram
write a programme to simulate a train station to automate
Advantages of Encapsulation You can also delay the resolution of the details until after the design. You can keep your code modular.
Q. What do you mean by Program Counter? Program Counter (PC): It determines the instruction that is to be executed next which means after the execution of an on-going instructi
How can non-repudiation be achieved into designing e-cash based system? E-cash is fundamentally an online solution. The buyer should validate the coins by the issuer so as to g
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